nitro | 3d782b5f5304e058161dce64bf27fc5c28af23675ce6db1fc46386fb8f532c2b

Resubmissions

22-02-2024 23:54

240222-3x6k8agf4w 10

22-02-2024 23:49

240222-3vb9lagf2t 10

21-02-2024 19:26

240221-x5j5ased59 10

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
21-02-2024 19:26

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General

Target

a064b524a661ce56c911fb3b184c1b8d.exe
Size

61KB
MD5

a064b524a661ce56c911fb3b184c1b8d
SHA1

a39aaf5834308ce443b56d80b7cf28ad9eb8f2f2
SHA256

3d782b5f5304e058161dce64bf27fc5c28af23675ce6db1fc46386fb8f532c2b
SHA512

397fd0aa5e5bbb37e2cc703a81335eabdeada48fde13e100b876e7fcd3c79218dc59e533f000e7dbb1e0dc9986d98617249d327c42e9c5b19f7aeb4e2f0a238b
SSDEEP

768:gnbyhKtnWoRxqf7GNI4r8YLDwUzc80gmq3oP/oDY:gnbRw7Gxpr/0O8/ok

Score

10^/10

nitro persistence ransomware spyware stealer

Malware Config

Signatures

Nitro
A ransomware that demands Discord nitro gift codes to decrypt files.
ransomware nitro
Renames multiple (67) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\a064b524a661ce56c911fb3b184c1b8d.exe\""	a064b524a661ce56c911fb3b184c1b8d.exe

Drops desktop.ini file(s) 3 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	a064b524a661ce56c911fb3b184c1b8d.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	a064b524a661ce56c911fb3b184c1b8d.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	a064b524a661ce56c911fb3b184c1b8d.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 6 IoCs

Web Service

T1102

flow	ioc
4	discord.com
5	discord.com
6	discord.com
7	discord.com
8	discord.com
9	discord.com

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
2	api.ipify.org
3	api.ipify.org

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	a064b524a661ce56c911fb3b184c1b8d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	a064b524a661ce56c911fb3b184c1b8d.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2240	a064b524a661ce56c911fb3b184c1b8d.exe
2240	a064b524a661ce56c911fb3b184c1b8d.exe

Suspicious use of AdjustPrivilegeToken 41 IoCs

description	pid	Process
Token: SeDebugPrivilege	2240	a064b524a661ce56c911fb3b184c1b8d.exe
Token: SeIncreaseQuotaPrivilege	768	WMIC.exe
Token: SeSecurityPrivilege	768	WMIC.exe
Token: SeTakeOwnershipPrivilege	768	WMIC.exe
Token: SeLoadDriverPrivilege	768	WMIC.exe
Token: SeSystemProfilePrivilege	768	WMIC.exe
Token: SeSystemtimePrivilege	768	WMIC.exe
Token: SeProfSingleProcessPrivilege	768	WMIC.exe
Token: SeIncBasePriorityPrivilege	768	WMIC.exe
Token: SeCreatePagefilePrivilege	768	WMIC.exe
Token: SeBackupPrivilege	768	WMIC.exe
Token: SeRestorePrivilege	768	WMIC.exe
Token: SeShutdownPrivilege	768	WMIC.exe
Token: SeDebugPrivilege	768	WMIC.exe
Token: SeSystemEnvironmentPrivilege	768	WMIC.exe
Token: SeRemoteShutdownPrivilege	768	WMIC.exe
Token: SeUndockPrivilege	768	WMIC.exe
Token: SeManageVolumePrivilege	768	WMIC.exe
Token: 33	768	WMIC.exe
Token: 34	768	WMIC.exe
Token: 35	768	WMIC.exe
Token: SeIncreaseQuotaPrivilege	768	WMIC.exe
Token: SeSecurityPrivilege	768	WMIC.exe
Token: SeTakeOwnershipPrivilege	768	WMIC.exe
Token: SeLoadDriverPrivilege	768	WMIC.exe
Token: SeSystemProfilePrivilege	768	WMIC.exe
Token: SeSystemtimePrivilege	768	WMIC.exe
Token: SeProfSingleProcessPrivilege	768	WMIC.exe
Token: SeIncBasePriorityPrivilege	768	WMIC.exe
Token: SeCreatePagefilePrivilege	768	WMIC.exe
Token: SeBackupPrivilege	768	WMIC.exe
Token: SeRestorePrivilege	768	WMIC.exe
Token: SeShutdownPrivilege	768	WMIC.exe
Token: SeDebugPrivilege	768	WMIC.exe
Token: SeSystemEnvironmentPrivilege	768	WMIC.exe
Token: SeRemoteShutdownPrivilege	768	WMIC.exe
Token: SeUndockPrivilege	768	WMIC.exe
Token: SeManageVolumePrivilege	768	WMIC.exe
Token: 33	768	WMIC.exe
Token: 34	768	WMIC.exe
Token: 35	768	WMIC.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 3036	2240	a064b524a661ce56c911fb3b184c1b8d.exe	28
PID 2240 wrote to memory of 3036	2240	a064b524a661ce56c911fb3b184c1b8d.exe	28
PID 2240 wrote to memory of 3036	2240	a064b524a661ce56c911fb3b184c1b8d.exe	28
PID 2240 wrote to memory of 3036	2240	a064b524a661ce56c911fb3b184c1b8d.exe	28
PID 3036 wrote to memory of 768	3036	cmd.exe	30
PID 3036 wrote to memory of 768	3036	cmd.exe	30
PID 3036 wrote to memory of 768	3036	cmd.exe	30
PID 3036 wrote to memory of 768	3036	cmd.exe	30

C:\Users\Admin\AppData\Local\Temp\a064b524a661ce56c911fb3b184c1b8d.exe
"C:\Users\Admin\AppData\Local\Temp\a064b524a661ce56c911fb3b184c1b8d.exe"
1⤵
- Adds Run key to start application
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3036
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Defacement

T1491

Replay Monitor

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Downloads

memory/2240-0-0x0000000000B90000-0x0000000000BA6000-memory.dmp

Filesize
88KB

Download
memory/2240-1-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/2240-2-0x0000000002260000-0x00000000022A0000-memory.dmp

Filesize
256KB

Download
memory/2240-46-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/2240-51-0x0000000002260000-0x00000000022A0000-memory.dmp

Filesize
256KB

Download
memory/2240-75-0x0000000002260000-0x00000000022A0000-memory.dmp

Filesize
256KB

Download
memory/2240-76-0x0000000002260000-0x00000000022A0000-memory.dmp

Filesize
256KB

Download